** Shares of Marmota MEU.AX rise as much as 5% to A$0.042, their highest levels since Nov 26, 2024
** The mineral explorer finds large-scale riverbed crossing areas of high titanium concentration at Muckanippie and Petratherm's similar find in South Australia
** Says newly identified ancient riverbed significantly expands potential areas for titanium discovery on co's Muckanippie and adjacent tenements
** Over 1.7 mln shares change hands, 2x the 30-day avg
** Stock dropped 9.3% in 2024
(Reporting by Kumar Tanishk in Bengaluru)
((Tanishk.Kumar@thomsonreuters.com;))